Commitments and Contingencies - Long Term Debt Commitments (Details) - Secured Debt [Member] $ in Millions	Sep. 30, 2016 USD ($)
Debt Instrument [Line Items]
Repayments of interest and fee commitments, remainder of 2016	$ 16.1
Repayments of interest and fee commitments, in 2017	40.6
Repayments of interest and fee commitments, in 2018	36.8
Repayments of interest and fee commitments, in 2019	33.3
Repayments of interest and fee commitments, in 2020	29.7
Repayments of interest and fee commitments, 2021 and beyond	118.3
Long-term Debt, Fiscal Year Maturity [Abstract]
Remainder of 2016	1.6
2017	11.6
2018	8.1
2019	7.4
2020	7.1
2021 and beyond	$ 65.7